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V4L/DVB: V4L2: Add support for OMAP2/3 V4L2 display driver on top of DSS2
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / omap / omap_vout.c
CommitLineData
5c7ab634
VH		 1/*
2 * omap_vout.c
3 *
4 * Copyright (C) 2005-2010 Texas Instruments.
5 *
6 * This file is licensed under the terms of the GNU General Public License
7 * version 2. This program is licensed "as is" without any warranty of any
8 * kind, whether express or implied.
9 *
10 * Leveraged code from the OMAP2 camera driver
11 * Video-for-Linux (Version 2) camera capture driver for
12 * the OMAP24xx camera controller.
13 *
14 * Author: Andy Lowe (source@mvista.com)
15 *
16 * Copyright (C) 2004 MontaVista Software, Inc.
17 * Copyright (C) 2010 Texas Instruments.
18 *
19 * History:
20 * 20-APR-2006 Khasim Modified VRFB based Rotation,
21 * The image data is always read from 0 degree
22 * view and written
23 * to the virtual space of desired rotation angle
24 * 4-DEC-2006 Jian Changed to support better memory management
25 *
26 * 17-Nov-2008 Hardik Changed driver to use video_ioctl2
27 *
28 * 23-Feb-2010 Vaibhav H Modified to use new DSS2 interface
29 *
30 */
31
32#include <linux/init.h>
33#include <linux/module.h>
34#include <linux/vmalloc.h>
35#include <linux/sched.h>
36#include <linux/types.h>
37#include <linux/platform_device.h>
38#include <linux/dma-mapping.h>
39#include <linux/irq.h>
40#include <linux/videodev2.h>
41
42#include <media/videobuf-dma-sg.h>
43#include <media/v4l2-device.h>
44#include <media/v4l2-ioctl.h>
45
46#include <plat/dma.h>
47#include <plat/vram.h>
48#include <plat/vrfb.h>
49#include <plat/display.h>
50
51#include "omap_voutlib.h"
52#include "omap_voutdef.h"
53
54MODULE_AUTHOR("Texas Instruments");
55MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
56MODULE_LICENSE("GPL");
57
58
59/* Driver Configuration macros */
60#define VOUT_NAME "omap_vout"
61
62enum omap_vout_channels {
63 OMAP_VIDEO1,
64 OMAP_VIDEO2,
65};
66
67enum dma_channel_state {
68 DMA_CHAN_NOT_ALLOTED,
69 DMA_CHAN_ALLOTED,
70};
71
72#define QQVGA_WIDTH 160
73#define QQVGA_HEIGHT 120
74
75/* Max Resolution supported by the driver */
76#define VID_MAX_WIDTH 1280 /* Largest width */
77#define VID_MAX_HEIGHT 720 /* Largest height */
78
79/* Mimimum requirement is 2x2 for DSS */
80#define VID_MIN_WIDTH 2
81#define VID_MIN_HEIGHT 2
82
83/* 2048 x 2048 is max res supported by OMAP display controller */
84#define MAX_PIXELS_PER_LINE 2048
85
86#define VRFB_TX_TIMEOUT 1000
87#define VRFB_NUM_BUFS 4
88
89/* Max buffer size tobe allocated during init */
90#define OMAP_VOUT_MAX_BUF_SIZE (VID_MAX_WIDTH*VID_MAX_HEIGHT*4)
91
92static struct videobuf_queue_ops video_vbq_ops;
93/* Variables configurable through module params*/
94static u32 video1_numbuffers = 3;
95static u32 video2_numbuffers = 3;
96static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
97static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
98static u32 vid1_static_vrfb_alloc;
99static u32 vid2_static_vrfb_alloc;
100static int debug;
101
102/* Module parameters */
103module_param(video1_numbuffers, uint, S_IRUGO);
104MODULE_PARM_DESC(video1_numbuffers,
105 "Number of buffers to be allocated at init time for Video1 device.");
106
107module_param(video2_numbuffers, uint, S_IRUGO);
108MODULE_PARM_DESC(video2_numbuffers,
109 "Number of buffers to be allocated at init time for Video2 device.");
110
111module_param(video1_bufsize, uint, S_IRUGO);
112MODULE_PARM_DESC(video1_bufsize,
113 "Size of the buffer to be allocated for video1 device");
114
115module_param(video2_bufsize, uint, S_IRUGO);
116MODULE_PARM_DESC(video2_bufsize,
117 "Size of the buffer to be allocated for video2 device");
118
119module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
120MODULE_PARM_DESC(vid1_static_vrfb_alloc,
121 "Static allocation of the VRFB buffer for video1 device");
122
123module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
124MODULE_PARM_DESC(vid2_static_vrfb_alloc,
125 "Static allocation of the VRFB buffer for video2 device");
126
127module_param(debug, bool, S_IRUGO);
128MODULE_PARM_DESC(debug, "Debug level (0-1)");
129
130/* list of image formats supported by OMAP2 video pipelines */
131const static struct v4l2_fmtdesc omap_formats[] = {
132 {
133 /* Note: V4L2 defines RGB565 as:
134 *
135 * Byte 0 Byte 1
136 * g2 g1 g0 r4 r3 r2 r1 r0 b4 b3 b2 b1 b0 g5 g4 g3
137 *
138 * We interpret RGB565 as:
139 *
140 * Byte 0 Byte 1
141 * g2 g1 g0 b4 b3 b2 b1 b0 r4 r3 r2 r1 r0 g5 g4 g3
142 */
143 .description = "RGB565, le",
144 .pixelformat = V4L2_PIX_FMT_RGB565,
145 },
146 {
147 /* Note: V4L2 defines RGB32 as: RGB-8-8-8-8 we use
148 * this for RGB24 unpack mode, the last 8 bits are ignored
149 * */
150 .description = "RGB32, le",
151 .pixelformat = V4L2_PIX_FMT_RGB32,
152 },
153 {
154 /* Note: V4L2 defines RGB24 as: RGB-8-8-8 we use
155 * this for RGB24 packed mode
156 *
157 */
158 .description = "RGB24, le",
159 .pixelformat = V4L2_PIX_FMT_RGB24,
160 },
161 {
162 .description = "YUYV (YUV 4:2:2), packed",
163 .pixelformat = V4L2_PIX_FMT_YUYV,
164 },
165 {
166 .description = "UYVY, packed",
167 .pixelformat = V4L2_PIX_FMT_UYVY,
168 },
169};
170
171#define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
172
173/*
174 * Allocate buffers
175 */
176static unsigned long omap_vout_alloc_buffer(u32 buf_size, u32 *phys_addr)
177{
178 u32 order, size;
179 unsigned long virt_addr, addr;
180
181 size = PAGE_ALIGN(buf_size);
182 order = get_order(size);
183 virt_addr = __get_free_pages(GFP_KERNEL | GFP_DMA, order);
184 addr = virt_addr;
185
186 if (virt_addr) {
187 while (size > 0) {
188 SetPageReserved(virt_to_page(addr));
189 addr += PAGE_SIZE;
190 size -= PAGE_SIZE;
191 }
192 }
193 *phys_addr = (u32) virt_to_phys((void *) virt_addr);
194 return virt_addr;
195}
196
197/*
198 * Free buffers
199 */
200static void omap_vout_free_buffer(unsigned long virtaddr, u32 buf_size)
201{
202 u32 order, size;
203 unsigned long addr = virtaddr;
204
205 size = PAGE_ALIGN(buf_size);
206 order = get_order(size);
207
208 while (size > 0) {
209 ClearPageReserved(virt_to_page(addr));
210 addr += PAGE_SIZE;
211 size -= PAGE_SIZE;
212 }
213 free_pages((unsigned long) virtaddr, order);
214}
215
216/*
217 * Function for allocating video buffers
218 */
219static int omap_vout_allocate_vrfb_buffers(struct omap_vout_device *vout,
220 unsigned int *count, int startindex)
221{
222 int i, j;
223
224 for (i = 0; i < *count; i++) {
225 if (!vout->smsshado_virt_addr[i]) {
226 vout->smsshado_virt_addr[i] =
227 omap_vout_alloc_buffer(vout->smsshado_size,
228 &vout->smsshado_phy_addr[i]);
229 }
230 if (!vout->smsshado_virt_addr[i] && startindex != -1) {
231 if (V4L2_MEMORY_MMAP == vout->memory && i >= startindex)
232 break;
233 }
234 if (!vout->smsshado_virt_addr[i]) {
235 for (j = 0; j < i; j++) {
236 omap_vout_free_buffer(
237 vout->smsshado_virt_addr[j],
238 vout->smsshado_size);
239 vout->smsshado_virt_addr[j] = 0;
240 vout->smsshado_phy_addr[j] = 0;
241 }
242 *count = 0;
243 return -ENOMEM;
244 }
245 memset((void *) vout->smsshado_virt_addr[i], 0,
246 vout->smsshado_size);
247 }
248 return 0;
249}
250
251/*
252 * Try format
253 */
254static int omap_vout_try_format(struct v4l2_pix_format *pix)
255{
256 int ifmt, bpp = 0;
257
258 pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
259 (u32)VID_MAX_HEIGHT);
260 pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
261
262 for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
263 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
264 break;
265 }
266
267 if (ifmt == NUM_OUTPUT_FORMATS)
268 ifmt = 0;
269
270 pix->pixelformat = omap_formats[ifmt].pixelformat;
271 pix->field = V4L2_FIELD_ANY;
272 pix->priv = 0;
273
274 switch (pix->pixelformat) {
275 case V4L2_PIX_FMT_YUYV:
276 case V4L2_PIX_FMT_UYVY:
277 default:
278 pix->colorspace = V4L2_COLORSPACE_JPEG;
279 bpp = YUYV_BPP;
280 break;
281 case V4L2_PIX_FMT_RGB565:
282 case V4L2_PIX_FMT_RGB565X:
283 pix->colorspace = V4L2_COLORSPACE_SRGB;
284 bpp = RGB565_BPP;
285 break;
286 case V4L2_PIX_FMT_RGB24:
287 pix->colorspace = V4L2_COLORSPACE_SRGB;
288 bpp = RGB24_BPP;
289 break;
290 case V4L2_PIX_FMT_RGB32:
291 case V4L2_PIX_FMT_BGR32:
292 pix->colorspace = V4L2_COLORSPACE_SRGB;
293 bpp = RGB32_BPP;
294 break;
295 }
296 pix->bytesperline = pix->width * bpp;
297 pix->sizeimage = pix->bytesperline * pix->height;
298
299 return bpp;
300}
301
302/*
303 * omap_vout_uservirt_to_phys: This inline function is used to convert user
304 * space virtual address to physical address.
305 */
306static u32 omap_vout_uservirt_to_phys(u32 virtp)
307{
308 unsigned long physp = 0;
309 struct vm_area_struct *vma;
310 struct mm_struct *mm = current->mm;
311
312 vma = find_vma(mm, virtp);
313 /* For kernel direct-mapped memory, take the easy way */
314 if (virtp >= PAGE_OFFSET) {
315 physp = virt_to_phys((void *) virtp);
316 } else if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
317 /* this will catch, kernel-allocated, mmaped-to-usermode
318 addresses */
319 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
320 } else {
321 /* otherwise, use get_user_pages() for general userland pages */
322 int res, nr_pages = 1;
323 struct page *pages;
324 down_read(&current->mm->mmap_sem);
325
326 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
327 0, &pages, NULL);
328 up_read(&current->mm->mmap_sem);
329
330 if (res == nr_pages) {
331 physp = __pa(page_address(&pages[0]) +
332 (virtp & ~PAGE_MASK));
333 } else {
334 printk(KERN_WARNING VOUT_NAME
335 "get_user_pages failed\n");
336 return 0;
337 }
338 }
339
340 return physp;
341}
342
343/*
344 * Wakes up the application once the DMA transfer to VRFB space is completed.
345 */
346static void omap_vout_vrfb_dma_tx_callback(int lch, u16 ch_status, void *data)
347{
348 struct vid_vrfb_dma *t = (struct vid_vrfb_dma *) data;
349
350 t->tx_status = 1;
351 wake_up_interruptible(&t->wait);
352}
353
354/*
355 * Release the VRFB context once the module exits
356 */
357static void omap_vout_release_vrfb(struct omap_vout_device *vout)
358{
359 int i;
360
361 for (i = 0; i < VRFB_NUM_BUFS; i++)
362 omap_vrfb_release_ctx(&vout->vrfb_context[i]);
363
364 if (vout->vrfb_dma_tx.req_status == DMA_CHAN_ALLOTED) {
365 vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;
366 omap_free_dma(vout->vrfb_dma_tx.dma_ch);
367 }
368}
369
370/*
371 * Return true if rotation is 90 or 270
372 */
373static inline int rotate_90_or_270(const struct omap_vout_device *vout)
374{
375 return (vout->rotation == dss_rotation_90_degree ||
376 vout->rotation == dss_rotation_270_degree);
377}
378
379/*
380 * Return true if rotation is enabled
381 */
382static inline int rotation_enabled(const struct omap_vout_device *vout)
383{
384 return vout->rotation || vout->mirror;
385}
386
387/*
388 * Reverse the rotation degree if mirroring is enabled
389 */
390static inline int calc_rotation(const struct omap_vout_device *vout)
391{
392 if (!vout->mirror)
393 return vout->rotation;
394
395 switch (vout->rotation) {
396 case dss_rotation_90_degree:
397 return dss_rotation_270_degree;
398 case dss_rotation_270_degree:
399 return dss_rotation_90_degree;
400 case dss_rotation_180_degree:
401 return dss_rotation_0_degree;
402 default:
403 return dss_rotation_180_degree;
404 }
405}
406
407/*
408 * Free the V4L2 buffers
409 */
410static void omap_vout_free_buffers(struct omap_vout_device *vout)
411{
412 int i, numbuffers;
413
414 /* Allocate memory for the buffers */
415 numbuffers = (vout->vid) ? video2_numbuffers : video1_numbuffers;
416 vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
417
418 for (i = 0; i < numbuffers; i++) {
419 omap_vout_free_buffer(vout->buf_virt_addr[i],
420 vout->buffer_size);
421 vout->buf_phy_addr[i] = 0;
422 vout->buf_virt_addr[i] = 0;
423 }
424}
425
426/*
427 * Free VRFB buffers
428 */
429static void omap_vout_free_vrfb_buffers(struct omap_vout_device *vout)
430{
431 int j;
432
433 for (j = 0; j < VRFB_NUM_BUFS; j++) {
434 omap_vout_free_buffer(vout->smsshado_virt_addr[j],
435 vout->smsshado_size);
436 vout->smsshado_virt_addr[j] = 0;
437 vout->smsshado_phy_addr[j] = 0;
438 }
439}
440
441/*
442 * Allocate the buffers for the VRFB space. Data is copied from V4L2
443 * buffers to the VRFB buffers using the DMA engine.
444 */
445static int omap_vout_vrfb_buffer_setup(struct omap_vout_device *vout,
446 unsigned int *count, unsigned int startindex)
447{
448 int i;
449 bool yuv_mode;
450
451 /* Allocate the VRFB buffers only if the buffers are not
452 * allocated during init time.
453 */
454 if ((rotation_enabled(vout)) && !vout->vrfb_static_allocation)
455 if (omap_vout_allocate_vrfb_buffers(vout, count, startindex))
456 return -ENOMEM;
457
458 if (vout->dss_mode == OMAP_DSS_COLOR_YUV2 ||
459 vout->dss_mode == OMAP_DSS_COLOR_UYVY)
460 yuv_mode = true;
461 else
462 yuv_mode = false;
463
464 for (i = 0; i < *count; i++)
465 omap_vrfb_setup(&vout->vrfb_context[i],
466 vout->smsshado_phy_addr[i], vout->pix.width,
467 vout->pix.height, vout->bpp, yuv_mode);
468
469 return 0;
470}
471
472/*
473 * Convert V4L2 rotation to DSS rotation
474 * V4L2 understand 0, 90, 180, 270.
475 * Convert to 0, 1, 2 and 3 repsectively for DSS
476 */
477static int v4l2_rot_to_dss_rot(int v4l2_rotation,
478 enum dss_rotation *rotation, bool mirror)
479{
480 int ret = 0;
481
482 switch (v4l2_rotation) {
483 case 90:
484 *rotation = dss_rotation_90_degree;
485 break;
486 case 180:
487 *rotation = dss_rotation_180_degree;
488 break;
489 case 270:
490 *rotation = dss_rotation_270_degree;
491 break;
492 case 0:
493 *rotation = dss_rotation_0_degree;
494 break;
495 default:
496 ret = -EINVAL;
497 }
498 return ret;
499}
500
501/*
502 * Calculate the buffer offsets from which the streaming should
503 * start. This offset calculation is mainly required because of
504 * the VRFB 32 pixels alignment with rotation.
505 */
506static int omap_vout_calculate_offset(struct omap_vout_device *vout)
507{
508 struct omap_overlay *ovl;
509 enum dss_rotation rotation;
510 struct omapvideo_info *ovid;
511 bool mirroring = vout->mirror;
512 struct omap_dss_device *cur_display;
513 struct v4l2_rect *crop = &vout->crop;
514 struct v4l2_pix_format *pix = &vout->pix;
515 int *cropped_offset = &vout->cropped_offset;
516 int vr_ps = 1, ps = 2, temp_ps = 2;
517 int offset = 0, ctop = 0, cleft = 0, line_length = 0;
518
519 ovid = &vout->vid_info;
520 ovl = ovid->overlays[0];
521 /* get the display device attached to the overlay */
522 if (!ovl->manager || !ovl->manager->device)
523 return -1;
524
525 cur_display = ovl->manager->device;
526 rotation = calc_rotation(vout);
527
528 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
529 V4L2_PIX_FMT_UYVY == pix->pixelformat) {
530 if (rotation_enabled(vout)) {
531 /*
532 * ps - Actual pixel size for YUYV/UYVY for
533 * VRFB/Mirroring is 4 bytes
534 * vr_ps - Virtually pixel size for YUYV/UYVY is
535 * 2 bytes
536 */
537 ps = 4;
538 vr_ps = 2;
539 } else {
540 ps = 2; /* otherwise the pixel size is 2 byte */
541 }
542 } else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat) {
543 ps = 4;
544 } else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat) {
545 ps = 3;
546 }
547 vout->ps = ps;
548 vout->vr_ps = vr_ps;
549
550 if (rotation_enabled(vout)) {
551 line_length = MAX_PIXELS_PER_LINE;
552 ctop = (pix->height - crop->height) - crop->top;
553 cleft = (pix->width - crop->width) - crop->left;
554 } else {
555 line_length = pix->width;
556 }
557 vout->line_length = line_length;
558 switch (rotation) {
559 case dss_rotation_90_degree:
560 offset = vout->vrfb_context[0].yoffset *
561 vout->vrfb_context[0].bytespp;
562 temp_ps = ps / vr_ps;
563 if (mirroring == 0) {
564 *cropped_offset = offset + line_length *
565 temp_ps * cleft + crop->top * temp_ps;
566 } else {
567 *cropped_offset = offset + line_length * temp_ps *
568 cleft + crop->top * temp_ps + (line_length *
569 ((crop->width / (vr_ps)) - 1) * ps);
570 }
571 break;
572 case dss_rotation_180_degree:
573 offset = ((MAX_PIXELS_PER_LINE * vout->vrfb_context[0].yoffset *
574 vout->vrfb_context[0].bytespp) +
575 (vout->vrfb_context[0].xoffset *
576 vout->vrfb_context[0].bytespp));
577 if (mirroring == 0) {
578 *cropped_offset = offset + (line_length * ps * ctop) +
579 (cleft / vr_ps) * ps;
580
581 } else {
582 *cropped_offset = offset + (line_length * ps * ctop) +
583 (cleft / vr_ps) * ps + (line_length *
584 (crop->height - 1) * ps);
585 }
586 break;
587 case dss_rotation_270_degree:
588 offset = MAX_PIXELS_PER_LINE * vout->vrfb_context[0].xoffset *
589 vout->vrfb_context[0].bytespp;
590 temp_ps = ps / vr_ps;
591 if (mirroring == 0) {
592 *cropped_offset = offset + line_length *
593 temp_ps * crop->left + ctop * ps;
594 } else {
595 *cropped_offset = offset + line_length *
596 temp_ps * crop->left + ctop * ps +
597 (line_length * ((crop->width / vr_ps) - 1) *
598 ps);
599 }
600 break;
601 case dss_rotation_0_degree:
602 if (mirroring == 0) {
603 *cropped_offset = (line_length * ps) *
604 crop->top + (crop->left / vr_ps) * ps;
605 } else {
606 *cropped_offset = (line_length * ps) *
607 crop->top + (crop->left / vr_ps) * ps +
608 (line_length * (crop->height - 1) * ps);
609 }
610 break;
611 default:
612 *cropped_offset = (line_length * ps * crop->top) /
613 vr_ps + (crop->left * ps) / vr_ps +
614 ((crop->width / vr_ps) - 1) * ps;
615 break;
616 }
617 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
618 __func__, *cropped_offset);
619 return 0;
620}
621
622/*
623 * Convert V4L2 pixel format to DSS pixel format
624 */
625static enum omap_color_mode video_mode_to_dss_mode(struct omap_vout_device
626 *vout)
627{
628 struct omap_overlay *ovl;
629 struct omapvideo_info *ovid;
630 struct v4l2_pix_format *pix = &vout->pix;
631 enum omap_color_mode mode;
632
633 ovid = &vout->vid_info;
634 ovl = ovid->overlays[0];
635
636 switch (pix->pixelformat) {
637 case 0:
638 break;
639 case V4L2_PIX_FMT_YUYV:
640 mode = OMAP_DSS_COLOR_YUV2;
641 break;
642 case V4L2_PIX_FMT_UYVY:
643 mode = OMAP_DSS_COLOR_UYVY;
644 break;
645 case V4L2_PIX_FMT_RGB565:
646 mode = OMAP_DSS_COLOR_RGB16;
647 break;
648 case V4L2_PIX_FMT_RGB24:
649 mode = OMAP_DSS_COLOR_RGB24P;
650 break;
651 case V4L2_PIX_FMT_RGB32:
652 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
653 OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
654 break;
655 case V4L2_PIX_FMT_BGR32:
656 mode = OMAP_DSS_COLOR_RGBX32;
657 break;
658 default:
659 mode = -EINVAL;
660 }
661 return mode;
662}
663
664/*
665 * Setup the overlay
666 */
667int omapvid_setup_overlay(struct omap_vout_device *vout,
668 struct omap_overlay *ovl, int posx, int posy, int outw,
669 int outh, u32 addr)
670{
671 int ret = 0;
672 struct omap_overlay_info info;
673 int cropheight, cropwidth, pixheight, pixwidth;
674
675 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
676 (outw != vout->pix.width || outh != vout->pix.height)) {
677 ret = -EINVAL;
678 goto setup_ovl_err;
679 }
680
681 vout->dss_mode = video_mode_to_dss_mode(vout);
682 if (vout->dss_mode == -EINVAL) {
683 ret = -EINVAL;
684 goto setup_ovl_err;
685 }
686
687 /* Setup the input plane parameters according to
688 * rotation value selected.
689 */
690 if (rotate_90_or_270(vout)) {
691 cropheight = vout->crop.width;
692 cropwidth = vout->crop.height;
693 pixheight = vout->pix.width;
694 pixwidth = vout->pix.height;
695 } else {
696 cropheight = vout->crop.height;
697 cropwidth = vout->crop.width;
698 pixheight = vout->pix.height;
699 pixwidth = vout->pix.width;
700 }
701
702 ovl->get_overlay_info(ovl, &info);
703 info.paddr = addr;
704 info.vaddr = NULL;
705 info.width = cropwidth;
706 info.height = cropheight;
707 info.color_mode = vout->dss_mode;
708 info.mirror = vout->mirror;
709 info.pos_x = posx;
710 info.pos_y = posy;
711 info.out_width = outw;
712 info.out_height = outh;
713 info.global_alpha = vout->win.global_alpha;
714 if (!rotation_enabled(vout)) {
715 info.rotation = 0;
716 info.rotation_type = OMAP_DSS_ROT_DMA;
717 info.screen_width = pixwidth;
718 } else {
719 info.rotation = vout->rotation;
720 info.rotation_type = OMAP_DSS_ROT_VRFB;
721 info.screen_width = 2048;
722 }
723
724 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
725 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
726 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
727 "out_height=%d rotation_type=%d screen_width=%d\n",
728 __func__, info.enabled, info.paddr, info.width, info.height,
729 info.color_mode, info.rotation, info.mirror, info.pos_x,
730 info.pos_y, info.out_width, info.out_height, info.rotation_type,
731 info.screen_width);
732
733 ret = ovl->set_overlay_info(ovl, &info);
734 if (ret)
735 goto setup_ovl_err;
736
737 return 0;
738
739setup_ovl_err:
740 v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
741 return ret;
742}
743
744/*
745 * Initialize the overlay structure
746 */
747int omapvid_init(struct omap_vout_device *vout, u32 addr)
748{
749 int ret = 0, i;
750 struct v4l2_window *win;
751 struct omap_overlay *ovl;
752 int posx, posy, outw, outh, temp;
753 struct omap_video_timings *timing;
754 struct omapvideo_info *ovid = &vout->vid_info;
755
756 win = &vout->win;
757 for (i = 0; i < ovid->num_overlays; i++) {
758 ovl = ovid->overlays[i];
759 if (!ovl->manager || !ovl->manager->device)
760 return -EINVAL;
761
762 timing = &ovl->manager->device->panel.timings;
763
764 outw = win->w.width;
765 outh = win->w.height;
766 switch (vout->rotation) {
767 case dss_rotation_90_degree:
768 /* Invert the height and width for 90
769 * and 270 degree rotation
770 */
771 temp = outw;
772 outw = outh;
773 outh = temp;
774 posy = (timing->y_res - win->w.width) - win->w.left;
775 posx = win->w.top;
776 break;
777
778 case dss_rotation_180_degree:
779 posx = (timing->x_res - win->w.width) - win->w.left;
780 posy = (timing->y_res - win->w.height) - win->w.top;
781 break;
782
783 case dss_rotation_270_degree:
784 temp = outw;
785 outw = outh;
786 outh = temp;
787 posy = win->w.left;
788 posx = (timing->x_res - win->w.height) - win->w.top;
789 break;
790
791 default:
792 posx = win->w.left;
793 posy = win->w.top;
794 break;
795 }
796
797 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
798 outw, outh, addr);
799 if (ret)
800 goto omapvid_init_err;
801 }
802 return 0;
803
804omapvid_init_err:
805 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
806 return ret;
807}
808
809/*
810 * Apply the changes set the go bit of DSS
811 */
812int omapvid_apply_changes(struct omap_vout_device *vout)
813{
814 int i;
815 struct omap_overlay *ovl;
816 struct omapvideo_info *ovid = &vout->vid_info;
817
818 for (i = 0; i < ovid->num_overlays; i++) {
819 ovl = ovid->overlays[i];
820 if (!ovl->manager || !ovl->manager->device)
821 return -EINVAL;
822 ovl->manager->apply(ovl->manager);
823 }
824
825 return 0;
826}
827
828void omap_vout_isr(void *arg, unsigned int irqstatus)
829{
830 int ret;
831 u32 addr, fid;
832 struct omap_overlay *ovl;
833 struct timeval timevalue;
834 struct omapvideo_info *ovid;
835 struct omap_dss_device *cur_display;
836 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
837
838 if (!vout->streaming)
839 return;
840
841 ovid = &vout->vid_info;
842 ovl = ovid->overlays[0];
843 /* get the display device attached to the overlay */
844 if (!ovl->manager || !ovl->manager->device)
845 return;
846
847 cur_display = ovl->manager->device;
848
849 spin_lock(&vout->vbq_lock);
850 do_gettimeofday(&timevalue);
851 if (cur_display->type == OMAP_DISPLAY_TYPE_DPI) {
852 if (!(irqstatus & DISPC_IRQ_VSYNC))
853 goto vout_isr_err;
854
855 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
856 vout->cur_frm->ts = timevalue;
857 vout->cur_frm->state = VIDEOBUF_DONE;
858 wake_up_interruptible(&vout->cur_frm->done);
859 vout->cur_frm = vout->next_frm;
860 }
861 vout->first_int = 0;
862 if (list_empty(&vout->dma_queue))
863 goto vout_isr_err;
864
865 vout->next_frm = list_entry(vout->dma_queue.next,
866 struct videobuf_buffer, queue);
867 list_del(&vout->next_frm->queue);
868
869 vout->next_frm->state = VIDEOBUF_ACTIVE;
870
871 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
872 + vout->cropped_offset;
873
874 /* First save the configuration in ovelray structure */
875 ret = omapvid_init(vout, addr);
876 if (ret)
877 printk(KERN_ERR VOUT_NAME
878 "failed to set overlay info\n");
879 /* Enable the pipeline and set the Go bit */
880 ret = omapvid_apply_changes(vout);
881 if (ret)
882 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
883 } else {
884
885 if (vout->first_int) {
886 vout->first_int = 0;
887 goto vout_isr_err;
888 }
889 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
890 fid = 1;
891 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
892 fid = 0;
893 else
894 goto vout_isr_err;
895
896 vout->field_id ^= 1;
897 if (fid != vout->field_id) {
898 if (0 == fid)
899 vout->field_id = fid;
900
901 goto vout_isr_err;
902 }
903 if (0 == fid) {
904 if (vout->cur_frm == vout->next_frm)
905 goto vout_isr_err;
906
907 vout->cur_frm->ts = timevalue;
908 vout->cur_frm->state = VIDEOBUF_DONE;
909 wake_up_interruptible(&vout->cur_frm->done);
910 vout->cur_frm = vout->next_frm;
911 } else if (1 == fid) {
912 if (list_empty(&vout->dma_queue) ||
913 (vout->cur_frm != vout->next_frm))
914 goto vout_isr_err;
915
916 vout->next_frm = list_entry(vout->dma_queue.next,
917 struct videobuf_buffer, queue);
918 list_del(&vout->next_frm->queue);
919
920 vout->next_frm->state = VIDEOBUF_ACTIVE;
921 addr = (unsigned long)
922 vout->queued_buf_addr[vout->next_frm->i] +
923 vout->cropped_offset;
924 /* First save the configuration in ovelray structure */
925 ret = omapvid_init(vout, addr);
926 if (ret)
927 printk(KERN_ERR VOUT_NAME
928 "failed to set overlay info\n");
929 /* Enable the pipeline and set the Go bit */
930 ret = omapvid_apply_changes(vout);
931 if (ret)
932 printk(KERN_ERR VOUT_NAME
933 "failed to change mode\n");
934 }
935
936 }
937
938vout_isr_err:
939 spin_unlock(&vout->vbq_lock);
940}
941
942
943/* Video buffer call backs */
944
945/*
946 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
947 * called. This is used to setup buffers and return size and count of
948 * buffers allocated. After the call to this buffer, videobuf layer will
949 * setup buffer queue depending on the size and count of buffers
950 */
951static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
952 unsigned int *size)
953{
954 int startindex = 0, i, j;
955 u32 phy_addr = 0, virt_addr = 0;
956 struct omap_vout_device *vout = q->priv_data;
957
958 if (!vout)
959 return -EINVAL;
960
961 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
962 return -EINVAL;
963
964 startindex = (vout->vid == OMAP_VIDEO1) ?
965 video1_numbuffers : video2_numbuffers;
966 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
967 *count = startindex;
968
969 if ((rotation_enabled(vout)) && *count > VRFB_NUM_BUFS)
970 *count = VRFB_NUM_BUFS;
971
972 /* If rotation is enabled, allocate memory for VRFB space also */
973 if (rotation_enabled(vout))
974 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
975 return -ENOMEM;
976
977 if (V4L2_MEMORY_MMAP != vout->memory)
978 return 0;
979
980 /* Now allocated the V4L2 buffers */
981 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
982 startindex = (vout->vid == OMAP_VIDEO1) ?
983 video1_numbuffers : video2_numbuffers;
984
985 for (i = startindex; i < *count; i++) {
986 vout->buffer_size = *size;
987
988 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
989 &phy_addr);
990 if (!virt_addr) {
991 if (!rotation_enabled(vout))
992 break;
993 /* Free the VRFB buffers if no space for V4L2 buffers */
994 for (j = i; j < *count; j++) {
995 omap_vout_free_buffer(
996 vout->smsshado_virt_addr[j],
997 vout->smsshado_size);
998 vout->smsshado_virt_addr[j] = 0;
999 vout->smsshado_phy_addr[j] = 0;
1000 }
1001 }
1002 vout->buf_virt_addr[i] = virt_addr;
1003 vout->buf_phy_addr[i] = phy_addr;
1004 }
1005 *count = vout->buffer_allocated = i;
1006
1007 return 0;
1008}
1009
1010/*
1011 * Free the V4L2 buffers additionally allocated than default
1012 * number of buffers and free all the VRFB buffers
1013 */
1014static void omap_vout_free_allbuffers(struct omap_vout_device *vout)
1015{
1016 int num_buffers = 0, i;
1017
1018 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1019 video1_numbuffers : video2_numbuffers;
1020
1021 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1022 if (vout->buf_virt_addr[i])
1023 omap_vout_free_buffer(vout->buf_virt_addr[i],
1024 vout->buffer_size);
1025
1026 vout->buf_virt_addr[i] = 0;
1027 vout->buf_phy_addr[i] = 0;
1028 }
1029 /* Free the VRFB buffers only if they are allocated
1030 * during reqbufs. Don't free if init time allocated
1031 */
1032 if (!vout->vrfb_static_allocation) {
1033 for (i = 0; i < VRFB_NUM_BUFS; i++) {
1034 if (vout->smsshado_virt_addr[i]) {
1035 omap_vout_free_buffer(
1036 vout->smsshado_virt_addr[i],
1037 vout->smsshado_size);
1038 vout->smsshado_virt_addr[i] = 0;
1039 vout->smsshado_phy_addr[i] = 0;
1040 }
1041 }
1042 }
1043 vout->buffer_allocated = num_buffers;
1044}
1045
1046/*
1047 * This function will be called when VIDIOC_QBUF ioctl is called.
1048 * It prepare buffers before give out for the display. This function
1049 * converts user space virtual address into physical address if userptr memory
1050 * exchange mechanism is used. If rotation is enabled, it copies entire
1051 * buffer into VRFB memory space before giving it to the DSS.
1052 */
1053static int omap_vout_buffer_prepare(struct videobuf_queue *q,
1054 struct videobuf_buffer *vb,
1055 enum v4l2_field field)
1056{
1057 struct vid_vrfb_dma *tx;
1058 enum dss_rotation rotation;
1059 struct videobuf_dmabuf *dmabuf = NULL;
1060 struct omap_vout_device *vout = q->priv_data;
1061 u32 dest_frame_index = 0, src_element_index = 0;
1062 u32 dest_element_index = 0, src_frame_index = 0;
1063 u32 elem_count = 0, frame_count = 0, pixsize = 2;
1064
1065 if (VIDEOBUF_NEEDS_INIT == vb->state) {
1066 vb->width = vout->pix.width;
1067 vb->height = vout->pix.height;
1068 vb->size = vb->width * vb->height * vout->bpp;
1069 vb->field = field;
1070 }
1071 vb->state = VIDEOBUF_PREPARED;
1072 /* if user pointer memory mechanism is used, get the physical
1073 * address of the buffer
1074 */
1075 if (V4L2_MEMORY_USERPTR == vb->memory) {
1076 if (0 == vb->baddr)
1077 return -EINVAL;
1078 /* Virtual address */
1079 /* priv points to struct videobuf_pci_sg_memory. But we went
1080 * pointer to videobuf_dmabuf, which is member of
1081 * videobuf_pci_sg_memory */
1082 dmabuf = videobuf_to_dma(q->bufs[vb->i]);
1083 dmabuf->vmalloc = (void *) vb->baddr;
1084
1085 /* Physical address */
1086 dmabuf->bus_addr =
1087 (dma_addr_t) omap_vout_uservirt_to_phys(vb->baddr);
1088 }
1089
1090 if (!rotation_enabled(vout)) {
1091 dmabuf = videobuf_to_dma(q->bufs[vb->i]);
1092 vout->queued_buf_addr[vb->i] = (u8 *) dmabuf->bus_addr;
1093 return 0;
1094 }
1095 dmabuf = videobuf_to_dma(q->bufs[vb->i]);
1096 /* If rotation is enabled, copy input buffer into VRFB
1097 * memory space using DMA. We are copying input buffer
1098 * into VRFB memory space of desired angle and DSS will
1099 * read image VRFB memory for 0 degree angle
1100 */
1101 pixsize = vout->bpp * vout->vrfb_bpp;
1102 /*
1103 * DMA transfer in double index mode
1104 */
1105
1106 /* Frame index */
1107 dest_frame_index = ((MAX_PIXELS_PER_LINE * pixsize) -
1108 (vout->pix.width * vout->bpp)) + 1;
1109
1110 /* Source and destination parameters */
1111 src_element_index = 0;
1112 src_frame_index = 0;
1113 dest_element_index = 1;
1114 /* Number of elements per frame */
1115 elem_count = vout->pix.width * vout->bpp;
1116 frame_count = vout->pix.height;
1117 tx = &vout->vrfb_dma_tx;
1118 tx->tx_status = 0;
1119 omap_set_dma_transfer_params(tx->dma_ch, OMAP_DMA_DATA_TYPE_S32,
1120 (elem_count / 4), frame_count, OMAP_DMA_SYNC_ELEMENT,
1121 tx->dev_id, 0x0);
1122 /* src_port required only for OMAP1 */
1123 omap_set_dma_src_params(tx->dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
1124 dmabuf->bus_addr, src_element_index, src_frame_index);
1125 /*set dma source burst mode for VRFB */
1126 omap_set_dma_src_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
1127 rotation = calc_rotation(vout);
1128
1129 /* dest_port required only for OMAP1 */
1130 omap_set_dma_dest_params(tx->dma_ch, 0, OMAP_DMA_AMODE_DOUBLE_IDX,
1131 vout->vrfb_context[vb->i].paddr[0], dest_element_index,
1132 dest_frame_index);
1133 /*set dma dest burst mode for VRFB */
1134 omap_set_dma_dest_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
1135 omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE, 0x20, 0);
1136
1137 omap_start_dma(tx->dma_ch);
1138 interruptible_sleep_on_timeout(&tx->wait, VRFB_TX_TIMEOUT);
1139
1140 if (tx->tx_status == 0) {
1141 omap_stop_dma(tx->dma_ch);
1142 return -EINVAL;
1143 }
1144 /* Store buffers physical address into an array. Addresses
1145 * from this array will be used to configure DSS */
1146 vout->queued_buf_addr[vb->i] = (u8 *)
1147 vout->vrfb_context[vb->i].paddr[rotation];
1148 return 0;
1149}
1150
1151/*
1152 * Buffer queue funtion will be called from the videobuf layer when _QBUF
1153 * ioctl is called. It is used to enqueue buffer, which is ready to be
1154 * displayed.
1155 */
1156static void omap_vout_buffer_queue(struct videobuf_queue *q,
1157 struct videobuf_buffer *vb)
1158{
1159 struct omap_vout_device *vout = q->priv_data;
1160
1161 /* Driver is also maintainig a queue. So enqueue buffer in the driver
1162 * queue */
1163 list_add_tail(&vb->queue, &vout->dma_queue);
1164
1165 vb->state = VIDEOBUF_QUEUED;
1166}
1167
1168/*
1169 * Buffer release function is called from videobuf layer to release buffer
1170 * which are already allocated
1171 */
1172static void omap_vout_buffer_release(struct videobuf_queue *q,
1173 struct videobuf_buffer *vb)
1174{
1175 struct omap_vout_device *vout = q->priv_data;
1176
1177 vb->state = VIDEOBUF_NEEDS_INIT;
1178
1179 if (V4L2_MEMORY_MMAP != vout->memory)
1180 return;
1181}
1182
1183/*
1184 * File operations
1185 */
1186static void omap_vout_vm_open(struct vm_area_struct *vma)
1187{
1188 struct omap_vout_device *vout = vma->vm_private_data;
1189
1190 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1191 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
1192 vout->mmap_count++;
1193}
1194
1195static void omap_vout_vm_close(struct vm_area_struct *vma)
1196{
1197 struct omap_vout_device *vout = vma->vm_private_data;
1198
1199 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1200 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
1201 vout->mmap_count--;
1202}
1203
1204static struct vm_operations_struct omap_vout_vm_ops = {
1205 .open = omap_vout_vm_open,
1206 .close = omap_vout_vm_close,
1207};
1208
1209static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
1210{
1211 int i;
1212 void *pos;
1213 unsigned long start = vma->vm_start;
1214 unsigned long size = (vma->vm_end - vma->vm_start);
1215 struct videobuf_dmabuf *dmabuf = NULL;
1216 struct omap_vout_device *vout = file->private_data;
1217 struct videobuf_queue *q = &vout->vbq;
1218
1219 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1220 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
1221 vma->vm_pgoff, vma->vm_start, vma->vm_end);
1222
1223 /* look for the buffer to map */
1224 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
1225 if (NULL == q->bufs[i])
1226 continue;
1227 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
1228 continue;
1229 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
1230 break;
1231 }
1232
1233 if (VIDEO_MAX_FRAME == i) {
1234 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1235 "offset invalid [offset=0x%lx]\n",
1236 (vma->vm_pgoff << PAGE_SHIFT));
1237 return -EINVAL;
1238 }
1239 q->bufs[i]->baddr = vma->vm_start;
1240
1241 vma->vm_flags |= VM_RESERVED;
1242 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1243 vma->vm_ops = &omap_vout_vm_ops;
1244 vma->vm_private_data = (void *) vout;
1245 dmabuf = videobuf_to_dma(q->bufs[i]);
1246 pos = dmabuf->vmalloc;
1247 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
1248 while (size > 0) {
1249 unsigned long pfn;
1250 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
1251 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
1252 return -EAGAIN;
1253 start += PAGE_SIZE;
1254 pos += PAGE_SIZE;
1255 size -= PAGE_SIZE;
1256 }
1257 vout->mmap_count++;
1258 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1259
1260 return 0;
1261}
1262
1263static int omap_vout_release(struct file *file)
1264{
1265 unsigned int ret, i;
1266 struct videobuf_queue *q;
1267 struct omapvideo_info *ovid;
1268 struct omap_vout_device *vout = file->private_data;
1269
1270 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1271 ovid = &vout->vid_info;
1272
1273 if (!vout)
1274 return 0;
1275
1276 q = &vout->vbq;
1277 /* Disable all the overlay managers connected with this interface */
1278 for (i = 0; i < ovid->num_overlays; i++) {
1279 struct omap_overlay *ovl = ovid->overlays[i];
1280 if (ovl->manager && ovl->manager->device) {
1281 struct omap_overlay_info info;
1282 ovl->get_overlay_info(ovl, &info);
1283 info.enabled = 0;
1284 ovl->set_overlay_info(ovl, &info);
1285 }
1286 }
1287 /* Turn off the pipeline */
1288 ret = omapvid_apply_changes(vout);
1289 if (ret)
1290 v4l2_warn(&vout->vid_dev->v4l2_dev,
1291 "Unable to apply changes\n");
1292
1293 /* Free all buffers */
1294 omap_vout_free_allbuffers(vout);
1295 videobuf_mmap_free(q);
1296
1297 /* Even if apply changes fails we should continue
1298 freeing allocated memeory */
1299 if (vout->streaming) {
1300 u32 mask = 0;
1301
1302 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
1303 DISPC_IRQ_EVSYNC_ODD;
1304 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1305 vout->streaming = 0;
1306
1307 videobuf_streamoff(q);
1308 videobuf_queue_cancel(q);
1309 }
1310
1311 if (vout->mmap_count != 0)
1312 vout->mmap_count = 0;
1313
1314 vout->opened -= 1;
1315 file->private_data = NULL;
1316
1317 if (vout->buffer_allocated)
1318 videobuf_mmap_free(q);
1319
1320 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1321 return ret;
1322}
1323
1324static int omap_vout_open(struct file *file)
1325{
1326 struct videobuf_queue *q;
1327 struct omap_vout_device *vout = NULL;
1328
1329 vout = video_drvdata(file);
1330 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1331
1332 if (vout == NULL)
1333 return -ENODEV;
1334
1335 /* for now, we only support single open */
1336 if (vout->opened)
1337 return -EBUSY;
1338
1339 vout->opened += 1;
1340
1341 file->private_data = vout;
1342 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1343
1344 q = &vout->vbq;
1345 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1346 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1347 video_vbq_ops.buf_release = omap_vout_buffer_release;
1348 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1349 spin_lock_init(&vout->vbq_lock);
1350
1351 videobuf_queue_sg_init(q, &video_vbq_ops, NULL, &vout->vbq_lock,
1352 vout->type, V4L2_FIELD_NONE,
1353 sizeof(struct videobuf_buffer), vout);
1354
1355 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1356 return 0;
1357}
1358
1359/*
1360 * V4L2 ioctls
1361 */
1362static int vidioc_querycap(struct file *file, void *fh,
1363 struct v4l2_capability *cap)
1364{
1365 struct omap_vout_device *vout = fh;
1366
1367 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1368 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1369 cap->bus_info[0] = '\0';
1370 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT;
1371
1372 return 0;
1373}
1374
1375static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1376 struct v4l2_fmtdesc *fmt)
1377{
1378 int index = fmt->index;
1379 enum v4l2_buf_type type = fmt->type;
1380
1381 fmt->index = index;
1382 fmt->type = type;
1383 if (index >= NUM_OUTPUT_FORMATS)
1384 return -EINVAL;
1385
1386 fmt->flags = omap_formats[index].flags;
1387 strlcpy(fmt->description, omap_formats[index].description,
1388 sizeof(fmt->description));
1389 fmt->pixelformat = omap_formats[index].pixelformat;
1390
1391 return 0;
1392}
1393
1394static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1395 struct v4l2_format *f)
1396{
1397 struct omap_vout_device *vout = fh;
1398
1399 f->fmt.pix = vout->pix;
1400 return 0;
1401
1402}
1403
1404static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1405 struct v4l2_format *f)
1406{
1407 struct omap_overlay *ovl;
1408 struct omapvideo_info *ovid;
1409 struct omap_video_timings *timing;
1410 struct omap_vout_device *vout = fh;
1411
1412 ovid = &vout->vid_info;
1413 ovl = ovid->overlays[0];
1414
1415 if (!ovl->manager || !ovl->manager->device)
1416 return -EINVAL;
1417 /* get the display device attached to the overlay */
1418 timing = &ovl->manager->device->panel.timings;
1419
1420 vout->fbuf.fmt.height = timing->y_res;
1421 vout->fbuf.fmt.width = timing->x_res;
1422
1423 omap_vout_try_format(&f->fmt.pix);
1424 return 0;
1425}
1426
1427static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1428 struct v4l2_format *f)
1429{
1430 int ret, bpp;
1431 struct omap_overlay *ovl;
1432 struct omapvideo_info *ovid;
1433 struct omap_video_timings *timing;
1434 struct omap_vout_device *vout = fh;
1435
1436 if (vout->streaming)
1437 return -EBUSY;
1438
1439 mutex_lock(&vout->lock);
1440
1441 ovid = &vout->vid_info;
1442 ovl = ovid->overlays[0];
1443
1444 /* get the display device attached to the overlay */
1445 if (!ovl->manager || !ovl->manager->device) {
1446 ret = -EINVAL;
1447 goto s_fmt_vid_out_exit;
1448 }
1449 timing = &ovl->manager->device->panel.timings;
1450
1451 /* We dont support RGB24-packed mode if vrfb rotation
1452 * is enabled*/
1453 if ((rotation_enabled(vout)) &&
1454 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1455 ret = -EINVAL;
1456 goto s_fmt_vid_out_exit;
1457 }
1458
1459 /* get the framebuffer parameters */
1460
1461 if (rotate_90_or_270(vout)) {
1462 vout->fbuf.fmt.height = timing->x_res;
1463 vout->fbuf.fmt.width = timing->y_res;
1464 } else {
1465 vout->fbuf.fmt.height = timing->y_res;
1466 vout->fbuf.fmt.width = timing->x_res;
1467 }
1468
1469 /* change to samller size is OK */
1470
1471 bpp = omap_vout_try_format(&f->fmt.pix);
1472 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1473
1474 /* try & set the new output format */
1475 vout->bpp = bpp;
1476 vout->pix = f->fmt.pix;
1477 vout->vrfb_bpp = 1;
1478
1479 /* If YUYV then vrfb bpp is 2, for others its 1 */
1480 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1481 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1482 vout->vrfb_bpp = 2;
1483
1484 /* set default crop and win */
1485 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1486
1487 /* Save the changes in the overlay strcuture */
1488 ret = omapvid_init(vout, 0);
1489 if (ret) {
1490 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1491 goto s_fmt_vid_out_exit;
1492 }
1493
1494 ret = 0;
1495
1496s_fmt_vid_out_exit:
1497 mutex_unlock(&vout->lock);
1498 return ret;
1499}
1500
1501static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1502 struct v4l2_format *f)
1503{
1504 int ret = 0;
1505 struct omap_vout_device *vout = fh;
1506 struct v4l2_window *win = &f->fmt.win;
1507
1508 ret = omap_vout_try_window(&vout->fbuf, win);
1509
1510 if (!ret) {
1511 if (vout->vid == OMAP_VIDEO1)
1512 win->global_alpha = 255;
1513 else
1514 win->global_alpha = f->fmt.win.global_alpha;
1515 }
1516
1517 return ret;
1518}
1519
1520static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1521 struct v4l2_format *f)
1522{
1523 int ret = 0;
1524 struct omap_overlay *ovl;
1525 struct omapvideo_info *ovid;
1526 struct omap_vout_device *vout = fh;
1527 struct v4l2_window *win = &f->fmt.win;
1528
1529 mutex_lock(&vout->lock);
1530 ovid = &vout->vid_info;
1531 ovl = ovid->overlays[0];
1532
1533 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1534 if (!ret) {
1535 /* Video1 plane does not support global alpha */
1536 if (ovl->id == OMAP_DSS_VIDEO1)
1537 vout->win.global_alpha = 255;
1538 else
1539 vout->win.global_alpha = f->fmt.win.global_alpha;
1540
1541 vout->win.chromakey = f->fmt.win.chromakey;
1542 }
1543 mutex_unlock(&vout->lock);
1544 return ret;
1545}
1546
1547static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1548 struct v4l2_fmtdesc *fmt)
1549{
1550 int index = fmt->index;
1551 enum v4l2_buf_type type = fmt->type;
1552
1553 fmt->index = index;
1554 fmt->type = type;
1555 if (index >= NUM_OUTPUT_FORMATS)
1556 return -EINVAL;
1557
1558 fmt->flags = omap_formats[index].flags;
1559 strlcpy(fmt->description, omap_formats[index].description,
1560 sizeof(fmt->description));
1561 fmt->pixelformat = omap_formats[index].pixelformat;
1562 return 0;
1563}
1564
1565static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1566 struct v4l2_format *f)
1567{
1568 u32 key_value = 0;
1569 struct omap_overlay *ovl;
1570 struct omapvideo_info *ovid;
1571 struct omap_vout_device *vout = fh;
1572 struct omap_overlay_manager_info info;
1573 struct v4l2_window *win = &f->fmt.win;
1574
1575 ovid = &vout->vid_info;
1576 ovl = ovid->overlays[0];
1577
1578 win->w = vout->win.w;
1579 win->field = vout->win.field;
1580 win->global_alpha = vout->win.global_alpha;
1581
1582 if (ovl->manager && ovl->manager->get_manager_info) {
1583 ovl->manager->get_manager_info(ovl->manager, &info);
1584 key_value = info.trans_key;
1585 }
1586 win->chromakey = key_value;
1587 return 0;
1588}
1589
1590static int vidioc_cropcap(struct file *file, void *fh,
1591 struct v4l2_cropcap *cropcap)
1592{
1593 struct omap_vout_device *vout = fh;
1594 struct v4l2_pix_format *pix = &vout->pix;
1595
1596 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1597 return -EINVAL;
1598
1599 /* Width and height are always even */
1600 cropcap->bounds.width = pix->width & ~1;
1601 cropcap->bounds.height = pix->height & ~1;
1602
1603 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1604 cropcap->pixelaspect.numerator = 1;
1605 cropcap->pixelaspect.denominator = 1;
1606 return 0;
1607}
1608
1609static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1610{
1611 struct omap_vout_device *vout = fh;
1612
1613 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1614 return -EINVAL;
1615 crop->c = vout->crop;
1616 return 0;
1617}
1618
1619static int vidioc_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1620{
1621 int ret = -EINVAL;
1622 struct omap_vout_device *vout = fh;
1623 struct omapvideo_info *ovid;
1624 struct omap_overlay *ovl;
1625 struct omap_video_timings *timing;
1626
1627 if (vout->streaming)
1628 return -EBUSY;
1629
1630 mutex_lock(&vout->lock);
1631 ovid = &vout->vid_info;
1632 ovl = ovid->overlays[0];
1633
1634 if (!ovl->manager || !ovl->manager->device) {
1635 ret = -EINVAL;
1636 goto s_crop_err;
1637 }
1638 /* get the display device attached to the overlay */
1639 timing = &ovl->manager->device->panel.timings;
1640
1641 if (rotate_90_or_270(vout)) {
1642 vout->fbuf.fmt.height = timing->x_res;
1643 vout->fbuf.fmt.width = timing->y_res;
1644 } else {
1645 vout->fbuf.fmt.height = timing->y_res;
1646 vout->fbuf.fmt.width = timing->x_res;
1647 }
1648
1649 if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1650 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1651 &vout->fbuf, &crop->c);
1652
1653s_crop_err:
1654 mutex_unlock(&vout->lock);
1655 return ret;
1656}
1657
1658static int vidioc_queryctrl(struct file *file, void *fh,
1659 struct v4l2_queryctrl *ctrl)
1660{
1661 int ret = 0;
1662
1663 switch (ctrl->id) {
1664 case V4L2_CID_ROTATE:
1665 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1666 break;
1667 case V4L2_CID_BG_COLOR:
1668 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1669 break;
1670 case V4L2_CID_VFLIP:
1671 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1672 break;
1673 default:
1674 ctrl->name[0] = '\0';
1675 ret = -EINVAL;
1676 }
1677 return ret;
1678}
1679
1680static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1681{
1682 int ret = 0;
1683 struct omap_vout_device *vout = fh;
1684
1685 switch (ctrl->id) {
1686 case V4L2_CID_ROTATE:
1687 ctrl->value = vout->control[0].value;
1688 break;
1689 case V4L2_CID_BG_COLOR:
1690 {
1691 struct omap_overlay_manager_info info;
1692 struct omap_overlay *ovl;
1693
1694 ovl = vout->vid_info.overlays[0];
1695 if (!ovl->manager || !ovl->manager->get_manager_info) {
1696 ret = -EINVAL;
1697 break;
1698 }
1699
1700 ovl->manager->get_manager_info(ovl->manager, &info);
1701 ctrl->value = info.default_color;
1702 break;
1703 }
1704 case V4L2_CID_VFLIP:
1705 ctrl->value = vout->control[2].value;
1706 break;
1707 default:
1708 ret = -EINVAL;
1709 }
1710 return ret;
1711}
1712
1713static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1714{
1715 int ret = 0;
1716 struct omap_vout_device *vout = fh;
1717
1718 switch (a->id) {
1719 case V4L2_CID_ROTATE:
1720 {
1721 int rotation = a->value;
1722
1723 mutex_lock(&vout->lock);
1724
1725 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1726 mutex_unlock(&vout->lock);
1727 ret = -EINVAL;
1728 break;
1729 }
1730
1731 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1732 vout->mirror)) {
1733 mutex_unlock(&vout->lock);
1734 ret = -EINVAL;
1735 break;
1736 }
1737
1738 vout->control[0].value = rotation;
1739 mutex_unlock(&vout->lock);
1740 break;
1741 }
1742 case V4L2_CID_BG_COLOR:
1743 {
1744 struct omap_overlay *ovl;
1745 unsigned int color = a->value;
1746 struct omap_overlay_manager_info info;
1747
1748 ovl = vout->vid_info.overlays[0];
1749
1750 mutex_lock(&vout->lock);
1751 if (!ovl->manager || !ovl->manager->get_manager_info) {
1752 mutex_unlock(&vout->lock);
1753 ret = -EINVAL;
1754 break;
1755 }
1756
1757 ovl->manager->get_manager_info(ovl->manager, &info);
1758 info.default_color = color;
1759 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1760 mutex_unlock(&vout->lock);
1761 ret = -EINVAL;
1762 break;
1763 }
1764
1765 vout->control[1].value = color;
1766 mutex_unlock(&vout->lock);
1767 break;
1768 }
1769 case V4L2_CID_VFLIP:
1770 {
1771 struct omap_overlay *ovl;
1772 struct omapvideo_info *ovid;
1773 unsigned int mirror = a->value;
1774
1775 ovid = &vout->vid_info;
1776 ovl = ovid->overlays[0];
1777
1778 mutex_lock(&vout->lock);
1779
1780 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1781 mutex_unlock(&vout->lock);
1782 ret = -EINVAL;
1783 break;
1784 }
1785 vout->mirror = mirror;
1786 vout->control[2].value = mirror;
1787 mutex_unlock(&vout->lock);
1788 break;
1789 }
1790 default:
1791 ret = -EINVAL;
1792 }
1793 return ret;
1794}
1795
1796static int vidioc_reqbufs(struct file *file, void *fh,
1797 struct v4l2_requestbuffers *req)
1798{
1799 int ret = 0;
1800 unsigned int i, num_buffers = 0;
1801 struct omap_vout_device *vout = fh;
1802 struct videobuf_queue *q = &vout->vbq;
1803 struct videobuf_dmabuf *dmabuf = NULL;
1804
1805 if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1806 return -EINVAL;
1807 /* if memory is not mmp or userptr
1808 return error */
1809 if ((V4L2_MEMORY_MMAP != req->memory) &&
1810 (V4L2_MEMORY_USERPTR != req->memory))
1811 return -EINVAL;
1812
1813 mutex_lock(&vout->lock);
1814 /* Cannot be requested when streaming is on */
1815 if (vout->streaming) {
1816 ret = -EBUSY;
1817 goto reqbuf_err;
1818 }
1819
1820 /* If buffers are already allocated free them */
1821 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1822 if (vout->mmap_count) {
1823 ret = -EBUSY;
1824 goto reqbuf_err;
1825 }
1826 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1827 video1_numbuffers : video2_numbuffers;
1828 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1829 dmabuf = videobuf_to_dma(q->bufs[i]);
1830 omap_vout_free_buffer((u32)dmabuf->vmalloc,
1831 vout->buffer_size);
1832 vout->buf_virt_addr[i] = 0;
1833 vout->buf_phy_addr[i] = 0;
1834 }
1835 vout->buffer_allocated = num_buffers;
1836 videobuf_mmap_free(q);
1837 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1838 if (vout->buffer_allocated) {
1839 videobuf_mmap_free(q);
1840 for (i = 0; i < vout->buffer_allocated; i++) {
1841 kfree(q->bufs[i]);
1842 q->bufs[i] = NULL;
1843 }
1844 vout->buffer_allocated = 0;
1845 }
1846 }
1847
1848 /*store the memory type in data structure */
1849 vout->memory = req->memory;
1850
1851 INIT_LIST_HEAD(&vout->dma_queue);
1852
1853 /* call videobuf_reqbufs api */
1854 ret = videobuf_reqbufs(q, req);
1855 if (ret < 0)
1856 goto reqbuf_err;
1857
1858 vout->buffer_allocated = req->count;
1859 for (i = 0; i < req->count; i++) {
1860 dmabuf = videobuf_to_dma(q->bufs[i]);
1861 dmabuf->vmalloc = (void *) vout->buf_virt_addr[i];
1862 dmabuf->bus_addr = (dma_addr_t) vout->buf_phy_addr[i];
1863 dmabuf->sglen = 1;
1864 }
1865reqbuf_err:
1866 mutex_unlock(&vout->lock);
1867 return ret;
1868}
1869
1870static int vidioc_querybuf(struct file *file, void *fh,
1871 struct v4l2_buffer *b)
1872{
1873 struct omap_vout_device *vout = fh;
1874
1875 return videobuf_querybuf(&vout->vbq, b);
1876}
1877
1878static int vidioc_qbuf(struct file *file, void *fh,
1879 struct v4l2_buffer *buffer)
1880{
1881 struct omap_vout_device *vout = fh;
1882 struct videobuf_queue *q = &vout->vbq;
1883
1884 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1885 (buffer->index >= vout->buffer_allocated) ||
1886 (q->bufs[buffer->index]->memory != buffer->memory)) {
1887 return -EINVAL;
1888 }
1889 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1890 if ((buffer->length < vout->pix.sizeimage) ||
1891 (0 == buffer->m.userptr)) {
1892 return -EINVAL;
1893 }
1894 }
1895
1896 if ((rotation_enabled(vout)) &&
1897 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1898 v4l2_warn(&vout->vid_dev->v4l2_dev,
1899 "DMA Channel not allocated for Rotation\n");
1900 return -EINVAL;
1901 }
1902
1903 return videobuf_qbuf(q, buffer);
1904}
1905
1906static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1907{
1908 struct omap_vout_device *vout = fh;
1909 struct videobuf_queue *q = &vout->vbq;
1910
1911 if (!vout->streaming)
1912 return -EINVAL;
1913
1914 if (file->f_flags & O_NONBLOCK)
1915 /* Call videobuf_dqbuf for non blocking mode */
1916 return videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1917 else
1918 /* Call videobuf_dqbuf for blocking mode */
1919 return videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1920}
1921
1922static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1923{
1924 int ret = 0, j;
1925 u32 addr = 0, mask = 0;
1926 struct omap_vout_device *vout = fh;
1927 struct videobuf_queue *q = &vout->vbq;
1928 struct omapvideo_info *ovid = &vout->vid_info;
1929
1930 mutex_lock(&vout->lock);
1931
1932 if (vout->streaming) {
1933 ret = -EBUSY;
1934 goto streamon_err;
1935 }
1936
1937 ret = videobuf_streamon(q);
1938 if (ret)
1939 goto streamon_err;
1940
1941 if (list_empty(&vout->dma_queue)) {
1942 ret = -EIO;
1943 goto streamon_err1;
1944 }
1945
1946 /* Get the next frame from the buffer queue */
1947 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1948 struct videobuf_buffer, queue);
1949 /* Remove buffer from the buffer queue */
1950 list_del(&vout->cur_frm->queue);
1951 /* Mark state of the current frame to active */
1952 vout->cur_frm->state = VIDEOBUF_ACTIVE;
1953 /* Initialize field_id and started member */
1954 vout->field_id = 0;
1955
1956 /* set flag here. Next QBUF will start DMA */
1957 vout->streaming = 1;
1958
1959 vout->first_int = 1;
1960
1961 if (omap_vout_calculate_offset(vout)) {
1962 ret = -EINVAL;
1963 goto streamon_err1;
1964 }
1965 addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1966 + vout->cropped_offset;
1967
1968 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD;
1969
1970 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1971
1972 for (j = 0; j < ovid->num_overlays; j++) {
1973 struct omap_overlay *ovl = ovid->overlays[j];
1974
1975 if (ovl->manager && ovl->manager->device) {
1976 struct omap_overlay_info info;
1977 ovl->get_overlay_info(ovl, &info);
1978 info.enabled = 1;
1979 info.paddr = addr;
1980 if (ovl->set_overlay_info(ovl, &info)) {
1981 ret = -EINVAL;
1982 goto streamon_err1;
1983 }
1984 }
1985 }
1986
1987 /* First save the configuration in ovelray structure */
1988 ret = omapvid_init(vout, addr);
1989 if (ret)
1990 v4l2_err(&vout->vid_dev->v4l2_dev,
1991 "failed to set overlay info\n");
1992 /* Enable the pipeline and set the Go bit */
1993 ret = omapvid_apply_changes(vout);
1994 if (ret)
1995 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1996
1997 ret = 0;
1998
1999streamon_err1:
2000 if (ret)
2001 ret = videobuf_streamoff(q);
2002streamon_err:
2003 mutex_unlock(&vout->lock);
2004 return ret;
2005}
2006
2007static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
2008{
2009 u32 mask = 0;
2010 int ret = 0, j;
2011 struct omap_vout_device *vout = fh;
2012 struct omapvideo_info *ovid = &vout->vid_info;
2013
2014 if (!vout->streaming)
2015 return -EINVAL;
2016
2017 vout->streaming = 0;
2018 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD;
2019
2020 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
2021
2022 for (j = 0; j < ovid->num_overlays; j++) {
2023 struct omap_overlay *ovl = ovid->overlays[j];
2024
2025 if (ovl->manager && ovl->manager->device) {
2026 struct omap_overlay_info info;
2027
2028 ovl->get_overlay_info(ovl, &info);
2029 info.enabled = 0;
2030 ret = ovl->set_overlay_info(ovl, &info);
2031 if (ret)
2032 v4l2_err(&vout->vid_dev->v4l2_dev,
2033 "failed to update overlay info in streamoff\n");
2034 }
2035 }
2036
2037 /* Turn of the pipeline */
2038 ret = omapvid_apply_changes(vout);
2039 if (ret)
2040 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
2041 " streamoff\n");
2042
2043 INIT_LIST_HEAD(&vout->dma_queue);
2044 ret = videobuf_streamoff(&vout->vbq);
2045
2046 return ret;
2047}
2048
2049static int vidioc_s_fbuf(struct file *file, void *fh,
2050 struct v4l2_framebuffer *a)
2051{
2052 int enable = 0;
2053 struct omap_overlay *ovl;
2054 struct omapvideo_info *ovid;
2055 struct omap_vout_device *vout = fh;
2056 struct omap_overlay_manager_info info;
2057 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
2058
2059 ovid = &vout->vid_info;
2060 ovl = ovid->overlays[0];
2061
2062 /* OMAP DSS doesn't support Source and Destination color
2063 key together */
2064 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
2065 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
2066 return -EINVAL;
2067 /* OMAP DSS Doesn't support the Destination color key
2068 and alpha blending together */
2069 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
2070 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
2071 return -EINVAL;
2072
2073 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
2074 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
2075 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
2076 } else
2077 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
2078
2079 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
2080 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
2081 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
2082 } else
2083 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
2084
2085 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
2086 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
2087 enable = 1;
2088 else
2089 enable = 0;
2090 if (ovl->manager && ovl->manager->get_manager_info &&
2091 ovl->manager->set_manager_info) {
2092
2093 ovl->manager->get_manager_info(ovl->manager, &info);
2094 info.trans_enabled = enable;
2095 info.trans_key_type = key_type;
2096 info.trans_key = vout->win.chromakey;
2097
2098 if (ovl->manager->set_manager_info(ovl->manager, &info))
2099 return -EINVAL;
2100 }
2101 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
2102 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
2103 enable = 1;
2104 } else {
2105 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
2106 enable = 0;
2107 }
2108 if (ovl->manager && ovl->manager->get_manager_info &&
2109 ovl->manager->set_manager_info) {
2110 ovl->manager->get_manager_info(ovl->manager, &info);
2111 info.alpha_enabled = enable;
2112 if (ovl->manager->set_manager_info(ovl->manager, &info))
2113 return -EINVAL;
2114 }
2115
2116 return 0;
2117}
2118
2119static int vidioc_g_fbuf(struct file *file, void *fh,
2120 struct v4l2_framebuffer *a)
2121{
2122 struct omap_overlay *ovl;
2123 struct omapvideo_info *ovid;
2124 struct omap_vout_device *vout = fh;
2125 struct omap_overlay_manager_info info;
2126
2127 ovid = &vout->vid_info;
2128 ovl = ovid->overlays[0];
2129
2130 a->flags = 0x0;
2131 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
2132 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
2133
2134 if (ovl->manager && ovl->manager->get_manager_info) {
2135 ovl->manager->get_manager_info(ovl->manager, &info);
2136 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
2137 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
2138 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
2139 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
2140 }
2141 if (ovl->manager && ovl->manager->get_manager_info) {
2142 ovl->manager->get_manager_info(ovl->manager, &info);
2143 if (info.alpha_enabled)
2144 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
2145 }
2146
2147 return 0;
2148}
2149
2150static const struct v4l2_ioctl_ops vout_ioctl_ops = {
2151 .vidioc_querycap = vidioc_querycap,
2152 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
2153 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
2154 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
2155 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
2156 .vidioc_queryctrl = vidioc_queryctrl,
2157 .vidioc_g_ctrl = vidioc_g_ctrl,
2158 .vidioc_s_fbuf = vidioc_s_fbuf,
2159 .vidioc_g_fbuf = vidioc_g_fbuf,
2160 .vidioc_s_ctrl = vidioc_s_ctrl,
2161 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
2162 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
2163 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
2164 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
2165 .vidioc_cropcap = vidioc_cropcap,
2166 .vidioc_g_crop = vidioc_g_crop,
2167 .vidioc_s_crop = vidioc_s_crop,
2168 .vidioc_reqbufs = vidioc_reqbufs,
2169 .vidioc_querybuf = vidioc_querybuf,
2170 .vidioc_qbuf = vidioc_qbuf,
2171 .vidioc_dqbuf = vidioc_dqbuf,
2172 .vidioc_streamon = vidioc_streamon,
2173 .vidioc_streamoff = vidioc_streamoff,
2174};
2175
2176static const struct v4l2_file_operations omap_vout_fops = {
2177 .owner = THIS_MODULE,
2178 .unlocked_ioctl = video_ioctl2,
2179 .mmap = omap_vout_mmap,
2180 .open = omap_vout_open,
2181 .release = omap_vout_release,
2182};
2183
2184/* Init functions used during driver initialization */
2185/* Initial setup of video_data */
2186static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
2187{
2188 struct video_device *vfd;
2189 struct v4l2_pix_format *pix;
2190 struct v4l2_control *control;
2191 struct omap_dss_device *display =
2192 vout->vid_info.overlays[0]->manager->device;
2193
2194 /* set the default pix */
2195 pix = &vout->pix;
2196
2197 /* Set the default picture of QVGA */
2198 pix->width = QQVGA_WIDTH;
2199 pix->height = QQVGA_HEIGHT;
2200
2201 /* Default pixel format is RGB 5-6-5 */
2202 pix->pixelformat = V4L2_PIX_FMT_RGB565;
2203 pix->field = V4L2_FIELD_ANY;
2204 pix->bytesperline = pix->width * 2;
2205 pix->sizeimage = pix->bytesperline * pix->height;
2206 pix->priv = 0;
2207 pix->colorspace = V4L2_COLORSPACE_JPEG;
2208
2209 vout->bpp = RGB565_BPP;
2210 vout->fbuf.fmt.width = display->panel.timings.x_res;
2211 vout->fbuf.fmt.height = display->panel.timings.y_res;
2212
2213 /* Set the data structures for the overlay parameters*/
2214 vout->win.global_alpha = 255;
2215 vout->fbuf.flags = 0;
2216 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
2217 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
2218 vout->win.chromakey = 0;
2219
2220 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
2221
2222 /*Initialize the control variables for
2223 rotation, flipping and background color. */
2224 control = vout->control;
2225 control[0].id = V4L2_CID_ROTATE;
2226 control[0].value = 0;
2227 vout->rotation = 0;
2228 vout->mirror = 0;
2229 vout->control[2].id = V4L2_CID_HFLIP;
2230 vout->control[2].value = 0;
2231 vout->vrfb_bpp = 2;
2232
2233 control[1].id = V4L2_CID_BG_COLOR;
2234 control[1].value = 0;
2235
2236 /* initialize the video_device struct */
2237 vfd = vout->vfd = video_device_alloc();
2238
2239 if (!vfd) {
2240 printk(KERN_ERR VOUT_NAME ": could not allocate"
2241 " video device struct\n");
2242 return -ENOMEM;
2243 }
2244 vfd->release = video_device_release;
2245 vfd->ioctl_ops = &vout_ioctl_ops;
2246
2247 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
2248
2249 /* need to register for a VID_HARDWARE_* ID in videodev.h */
2250 vfd->fops = &omap_vout_fops;
2251 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
2252 mutex_init(&vout->lock);
2253
2254 vfd->minor = -1;
2255 return 0;
2256
2257}
2258
2259/* Setup video buffers */
2260static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
2261 int vid_num)
2262{
2263 u32 numbuffers;
2264 int ret = 0, i, j;
2265 int image_width, image_height;
2266 struct video_device *vfd;
2267 struct omap_vout_device *vout;
2268 int static_vrfb_allocation = 0, vrfb_num_bufs = VRFB_NUM_BUFS;
2269 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2270 struct omap2video_device *vid_dev =
2271 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
2272
2273 vout = vid_dev->vouts[vid_num];
2274 vfd = vout->vfd;
2275
2276 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
2277 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
2278 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
2279
2280 for (i = 0; i < numbuffers; i++) {
2281 vout->buf_virt_addr[i] =
2282 omap_vout_alloc_buffer(vout->buffer_size,
2283 (u32 *) &vout->buf_phy_addr[i]);
2284 if (!vout->buf_virt_addr[i]) {
2285 numbuffers = i;
2286 ret = -ENOMEM;
2287 goto free_buffers;
2288 }
2289 }
2290
2291 for (i = 0; i < VRFB_NUM_BUFS; i++) {
2292 if (omap_vrfb_request_ctx(&vout->vrfb_context[i])) {
2293 dev_info(&pdev->dev, ": VRFB allocation failed\n");
2294 for (j = 0; j < i; j++)
2295 omap_vrfb_release_ctx(&vout->vrfb_context[j]);
2296 ret = -ENOMEM;
2297 goto free_buffers;
2298 }
2299 }
2300 vout->cropped_offset = 0;
2301
2302 /* Calculate VRFB memory size */
2303 /* allocate for worst case size */
2304 image_width = VID_MAX_WIDTH / TILE_SIZE;
2305 if (VID_MAX_WIDTH % TILE_SIZE)
2306 image_width++;
2307
2308 image_width = image_width * TILE_SIZE;
2309 image_height = VID_MAX_HEIGHT / TILE_SIZE;
2310
2311 if (VID_MAX_HEIGHT % TILE_SIZE)
2312 image_height++;
2313
2314 image_height = image_height * TILE_SIZE;
2315 vout->smsshado_size = PAGE_ALIGN(image_width * image_height * 2 * 2);
2316
2317 /*
2318 * Request and Initialize DMA, for DMA based VRFB transfer
2319 */
2320 vout->vrfb_dma_tx.dev_id = OMAP_DMA_NO_DEVICE;
2321 vout->vrfb_dma_tx.dma_ch = -1;
2322 vout->vrfb_dma_tx.req_status = DMA_CHAN_ALLOTED;
2323 ret = omap_request_dma(vout->vrfb_dma_tx.dev_id, "VRFB DMA TX",
2324 omap_vout_vrfb_dma_tx_callback,
2325 (void *) &vout->vrfb_dma_tx, &vout->vrfb_dma_tx.dma_ch);
2326 if (ret < 0) {
2327 vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;
2328 dev_info(&pdev->dev, ": failed to allocate DMA Channel for"
2329 " video%d\n", vfd->minor);
2330 }
2331 init_waitqueue_head(&vout->vrfb_dma_tx.wait);
2332
2333 /* Allocate VRFB buffers if selected through bootargs */
2334 static_vrfb_allocation = (vid_num == 0) ?
2335 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
2336
2337 /* statically allocated the VRFB buffer is done through
2338 commands line aruments */
2339 if (static_vrfb_allocation) {
2340 if (omap_vout_allocate_vrfb_buffers(vout, &vrfb_num_bufs, -1)) {
2341 ret = -ENOMEM;
2342 goto release_vrfb_ctx;
2343 }
2344 vout->vrfb_static_allocation = 1;
2345 }
2346 return 0;
2347
2348release_vrfb_ctx:
2349 for (j = 0; j < VRFB_NUM_BUFS; j++)
2350 omap_vrfb_release_ctx(&vout->vrfb_context[j]);
2351
2352free_buffers:
2353 for (i = 0; i < numbuffers; i++) {
2354 omap_vout_free_buffer(vout->buf_virt_addr[i],
2355 vout->buffer_size);
2356 vout->buf_virt_addr[i] = 0;
2357 vout->buf_phy_addr[i] = 0;
2358 }
2359 return ret;
2360
2361}
2362
2363/* Create video out devices */
2364static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2365{
2366 int ret = 0, k;
2367 struct omap_vout_device *vout;
2368 struct video_device *vfd = NULL;
2369 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2370 struct omap2video_device *vid_dev = container_of(v4l2_dev,
2371 struct omap2video_device, v4l2_dev);
2372
2373 for (k = 0; k < pdev->num_resources; k++) {
2374
2375 vout = kmalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2376 if (!vout) {
2377 dev_err(&pdev->dev, ": could not allocate memory\n");
2378 return -ENOMEM;
2379 }
2380 memset(vout, 0, sizeof(struct omap_vout_device));
2381
2382 vout->vid = k;
2383 vid_dev->vouts[k] = vout;
2384 vout->vid_dev = vid_dev;
2385 /* Select video2 if only 1 overlay is controlled by V4L2 */
2386 if (pdev->num_resources == 1)
2387 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2388 else
2389 /* Else select video1 and video2 one by one. */
2390 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2391 vout->vid_info.num_overlays = 1;
2392 vout->vid_info.id = k + 1;
2393
2394 /* Setup the default configuration for the video devices
2395 */
2396 if (omap_vout_setup_video_data(vout) != 0) {
2397 ret = -ENOMEM;
2398 goto error;
2399 }
2400
2401 /* Allocate default number of buffers for the video streaming
2402 * and reserve the VRFB space for rotation
2403 */
2404 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2405 ret = -ENOMEM;
2406 goto error1;
2407 }
2408
2409 /* Register the Video device with V4L2
2410 */
2411 vfd = vout->vfd;
2412 if (video_register_device(vfd, VFL_TYPE_GRABBER, k + 1) < 0) {
2413 dev_err(&pdev->dev, ": Could not register "
2414 "Video for Linux device\n");
2415 vfd->minor = -1;
2416 ret = -ENODEV;
2417 goto error2;
2418 }
2419 video_set_drvdata(vfd, vout);
2420
2421 /* Configure the overlay structure */
2422 ret = omapvid_init(vid_dev->vouts[k], 0);
2423 if (!ret)
2424 goto success;
2425
2426error2:
2427 omap_vout_release_vrfb(vout);
2428 omap_vout_free_buffers(vout);
2429error1:
2430 video_device_release(vfd);
2431error:
2432 kfree(vout);
2433 return ret;
2434
2435success:
2436 dev_info(&pdev->dev, ": registered and initialized"
2437 " video device %d\n", vfd->minor);
2438 if (k == (pdev->num_resources - 1))
2439 return 0;
2440 }
2441
2442 return -ENODEV;
2443}
2444/* Driver functions */
2445static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2446{
2447 struct video_device *vfd;
2448
2449 if (!vout)
2450 return;
2451
2452 vfd = vout->vfd;
2453 if (vfd) {
2454 if (!video_is_registered(vfd)) {
2455 /*
2456 * The device was never registered, so release the
2457 * video_device struct directly.
2458 */
2459 video_device_release(vfd);
2460 } else {
2461 /*
2462 * The unregister function will release the video_device
2463 * struct as well as unregistering it.
2464 */
2465 video_unregister_device(vfd);
2466 }
2467 }
2468
2469 omap_vout_release_vrfb(vout);
2470 omap_vout_free_buffers(vout);
2471 /* Free the VRFB buffer if allocated
2472 * init time
2473 */
2474 if (vout->vrfb_static_allocation)
2475 omap_vout_free_vrfb_buffers(vout);
2476
2477 kfree(vout);
2478}
2479
2480static int omap_vout_remove(struct platform_device *pdev)
2481{
2482 int k;
2483 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2484 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2485 omap2video_device, v4l2_dev);
2486
2487 v4l2_device_unregister(v4l2_dev);
2488 for (k = 0; k < pdev->num_resources; k++)
2489 omap_vout_cleanup_device(vid_dev->vouts[k]);
2490
2491 for (k = 0; k < vid_dev->num_displays; k++) {
2492 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2493 vid_dev->displays[k]->disable(vid_dev->displays[k]);
2494
2495 omap_dss_put_device(vid_dev->displays[k]);
2496 }
2497 kfree(vid_dev);
2498 return 0;
2499}
2500
2501static int __init omap_vout_probe(struct platform_device *pdev)
2502{
2503 int ret = 0, i;
2504 struct omap_overlay *ovl;
2505 struct omap_dss_device *dssdev = NULL;
2506 struct omap_dss_device *def_display;
2507 struct omap2video_device *vid_dev = NULL;
2508
2509 if (pdev->num_resources == 0) {
2510 dev_err(&pdev->dev, "probed for an unknown device\n");
2511 return -ENODEV;
2512 }
2513
2514 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2515 if (vid_dev == NULL)
2516 return -ENOMEM;
2517
2518 vid_dev->num_displays = 0;
2519 for_each_dss_dev(dssdev) {
2520 omap_dss_get_device(dssdev);
2521 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2522 }
2523
2524 if (vid_dev->num_displays == 0) {
2525 dev_err(&pdev->dev, "no displays\n");
2526 ret = -EINVAL;
2527 goto probe_err0;
2528 }
2529
2530 vid_dev->num_overlays = omap_dss_get_num_overlays();
2531 for (i = 0; i < vid_dev->num_overlays; i++)
2532 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2533
2534 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2535 for (i = 0; i < vid_dev->num_managers; i++)
2536 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2537
2538 /* Get the Video1 overlay and video2 overlay.
2539 * Setup the Display attached to that overlays
2540 */
2541 for (i = 1; i < vid_dev->num_overlays; i++) {
2542 ovl = omap_dss_get_overlay(i);
2543 if (ovl->manager && ovl->manager->device) {
2544 def_display = ovl->manager->device;
2545 } else {
2546 dev_warn(&pdev->dev, "cannot find display\n");
2547 def_display = NULL;
2548 }
2549 if (def_display) {
2550 ret = def_display->enable(def_display);
2551 if (ret) {
2552 /* Here we are not considering a error
2553 * as display may be enabled by frame
2554 * buffer driver
2555 */
2556 dev_warn(&pdev->dev,
2557 "'%s' Display already enabled\n",
2558 def_display->name);
2559 }
2560 /* set the update mode */
2561 if (def_display->caps &
2562 OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2563#ifdef CONFIG_FB_OMAP2_FORCE_AUTO_UPDATE
2564 if (def_display->enable_te)
2565 def_display->enable_te(def_display, 1);
2566 if (def_display->set_update_mode)
2567 def_display->set_update_mode(def_display,
2568 OMAP_DSS_UPDATE_AUTO);
2569#else /* MANUAL_UPDATE */
2570 if (def_display->enable_te)
2571 def_display->enable_te(def_display, 0);
2572 if (def_display->set_update_mode)
2573 def_display->set_update_mode(def_display,
2574 OMAP_DSS_UPDATE_MANUAL);
2575#endif
2576 } else {
2577 if (def_display->set_update_mode)
2578 def_display->set_update_mode(def_display,
2579 OMAP_DSS_UPDATE_AUTO);
2580 }
2581 }
2582 }
2583
2584 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2585 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2586 ret = -ENODEV;
2587 goto probe_err1;
2588 }
2589
2590 ret = omap_vout_create_video_devices(pdev);
2591 if (ret)
2592 goto probe_err2;
2593
2594 for (i = 0; i < vid_dev->num_displays; i++) {
2595 struct omap_dss_device *display = vid_dev->displays[i];
2596
2597 if (display->update)
2598 display->update(display, 0, 0,
2599 display->panel.timings.x_res,
2600 display->panel.timings.y_res);
2601 }
2602 return 0;
2603
2604probe_err2:
2605 v4l2_device_unregister(&vid_dev->v4l2_dev);
2606probe_err1:
2607 for (i = 1; i < vid_dev->num_overlays; i++) {
2608 def_display = NULL;
2609 ovl = omap_dss_get_overlay(i);
2610 if (ovl->manager && ovl->manager->device)
2611 def_display = ovl->manager->device;
2612
2613 if (def_display)
2614 def_display->disable(def_display);
2615 }
2616probe_err0:
2617 kfree(vid_dev);
2618 return ret;
2619}
2620
2621static struct platform_driver omap_vout_driver = {
2622 .driver = {
2623 .name = VOUT_NAME,
2624 },
2625 .probe = omap_vout_probe,
2626 .remove = omap_vout_remove,
2627};
2628
2629static int __init omap_vout_init(void)
2630{
2631 if (platform_driver_register(&omap_vout_driver) != 0) {
2632 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2633 return -EINVAL;
2634 }
2635 return 0;
2636}
2637
2638static void omap_vout_cleanup(void)
2639{
2640 platform_driver_unregister(&omap_vout_driver);
2641}
2642
2643late_initcall(omap_vout_init);
2644module_exit(omap_vout_cleanup);
kernel source for telekom puls (alcatel/mediatek)